Use constraints: The dataset includes data provided by the BRISK Project Partner organisations. The detailed documentation of what partner provided what data and under what conditions is given in the Annex of the document: 70618-3.1.2.2 Data Collection Report: http://www.brisk.helcom.fi/publications/en_GB/publications/_files/87683540275822972/default/Report%20on%20collected%20data.pdf

The data set is showing underwater sandbanks in the Baltic Sea area as polygons used for the BRISK project (Sub-regional risk of spill of oil and hazardous substances in the Baltic Sea, http://www.brisk.helcom.fi/). This dataset has been produced by COWI ( http://www.cowi.dk) based on data collected from HELCOM and Russia. Helcom data is originated from EU-BALANCE project (Baltic Marine seabed sediments with selections of Gridcode=III "Sand including fine to coarse sand (with gravel exposures)". Helcom areas in Russian part of Gulf of Finland are replaced with data received from Russian BRISK project partners. 10 m depth curve from Helcom are used to divide the areas.